British Association for the Advancement of Science. 133 
to the habits of the salmon and allied species, and with regard 
to the identity of various young and full grown fish. 
Mr. C. C. Babington made an oral communication concerning 
some recent additions to the English Flora.—aA letter was read 
from Mr. Garner, on the Beroe pileus, stating that he had not 
seen in this snienal true luminosity, but only a peculiar luminosity 
in the dark. The external rows of cilia he believed might pro- 
duce it. He had remarked, that if only one of the cilie were 
removed from this animal, it still continued to vibrate for many 
hours. He thought the currents in Beroe might be accounted 
for by ciliz, which he observed to be placed in the whole of the 
interior of the animal. In the interior of the ane he had ob- 
served what appeared to him to be sacculi. 
Section BE. Medical Science. 
— an introductory address from Dr. Yelloly, President of 
_ the : Section, a paper by Sir David Dickson was read, containing 
: abstracts of a remarkable case of pens of the duodenum and 
of some other interesting cases. 
© Mr. Middlemore read a brief noties of the methods which 
have been used for the removal of capsular cataract, where the 
opake capsule remains after absorption of the lens, for the pur- 
pose of introducing to notice an instrument to facilitate the ope- 
apron of extraction without interfering with the transparent 
Structures of the eye. It consists of a needle, accompanied by a 
_ Small forceps, the former capable of being spite! leaving 
ie 
% 
the latter to be fixed on the opake membrane and then withdrawn 
i through the sclerotic, through which the needle had been intro- 
ced. He also detailed a case in which the operation for artifi- 
cial pupil had been performed with success, and presented the 
patient for examination. 
Dr. Foville, of Paris, presented apaper, detailing the results 
of his researches on the anatomy of the brain. He urged the 
advantages of examining the structure of the brain by manual 
Separation rather than by section, and gave credit to Willis, as 
being the first advocate of this method.—Prof. Macartney read an 
_ &ssay on the means of repressing hemorrhage from arteries; giv- 
ing the preference to metallic ligatures ; and also a paper on the 
rules for findirig with exactness the position of the principal ar- 
teries and nerves, from their relations to the external forms of the 
